NCERT Solutions for Class 9 Maths Chapter 2 Polynomials Exercise 2.5 Solutions

CBSE X Related Questions

  • 1.
    Arc \(PQ\) subtends an angle \(\theta\) at the centre of the circle with radius \(6.3 \text{ cm}\). If \(\text{Arc } PQ = 11 \text{ cm}\), then the value of \(\theta\) is

      • \(10^{\circ}\)
      • \(60^{\circ}\)
      • \(45^{\circ}\)
      • \(100^{\circ}\)

    • 2.
      An ice-cream cone of radius \(r\) and height \(h\) is completely filled by two spherical scoops of ice-cream. If radius of each spherical scoop is \(\frac{r}{2}\), then \(h : 2r\) equals

        • \(1 : 8\)
        • \(1 : 2\)
        • \(1 : 1\)
        • \(2 : 1\)

      • 3.
        Assertion (A) : \((\sqrt{3} + \sqrt{5})\) is an irrational number.
        Reason (R) : Sum of the any two irrational numbers is always irrational.

          • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
          • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
          • Assertion (A) is true, but Reason (R) is false.
          • Assertion (A) is false, but Reason (R) is true.

        • 4.
          For any natural number n, \( 5^n \) ends with the digit :

            • 0
            • 5
            • 3
            • 2

          • 5.
            The dimensions of a window are 156 cm \(\times\) 216 cm. Arjun wants to put grill on the window creating complete squares of maximum size. Determine the side length of the square and hence find the number of squares formed.


              • 6.
                If \(PQ\) and \(PR\) are tangents to the circle with centre \(O\) and radius \(4 \text{ cm}\) such that \(\angle QPR = 90^{\circ}\), then the length \(OP\) is

                  • \(4 \text{ cm}\)
                  • \(4\sqrt{2} \text{ cm}\)
                  • \(8 \text{ cm}\)
                  • \(2\sqrt{2} \text{ cm}\)

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